Description:Field of Invention
[001] The invention relates to a system designed for lifting and lowering the load body of small commercial vehicles (SCVs) and light-duty (LD) electric trucks. More specifically, it relates to a hydraulic system that functions as an emergency mechanism in the event of a breakdown of the electric truck. This system eliminates the need to remove the load body during repairs, thereby saving time and reducing costs associated with maintenance and restoration of the vehicle.
Background of the Invention
[002] Currently, even a minor failure on the road presents a significant challenge for haulage vehicles. Drivers or co-drivers cannot lift the load body for inspection, requiring the entire vehicle to be transported to a service centre. At the service centre, mechanics must remove the load body, even for minor inspections and then reassemble it after addressing the issue. This process is labour-intensive, time-consuming, and costly for customers. This issue is particularly critical in electric vehicles, where key components are located beneath the load body, further complicating inspections and repairs.
[003] Electric trucks are becoming increasingly popular in our emerging country. In these vehicles, most components are installed between the chassis and the load body. During this developmental phase, these trucks frequently experience failures. Inspection becomes a highly complex and time-consuming task if the failure occurs in components located between the load body and the chassis. The disclosed invention, therefore, has an objective to address this challenge by providing a mechanism that enables raising or lowering the load body with just one click, thereby significantly reducing the breakdown time. As an objective, this system also aims to provide a manual mode of operation to enable the raising or lowering of the load body even in cases where, for any reason, the automatic system fails to operate as intended, thereby providing a foolproof failsafe.
[004] For such a system to be widely adopted in our country's price-sensitive market, it must be easy to manufacture, implement, and maintain. Therefore, an additional objective of this invention is to provide an automatic load body tilting system with an integrated alarm mechanism that is easy to manufacture, implement and maintain. Such a system should also facilitate the lifting of the load body in electric small construction vehicles (SCVs) and light-duty trucks while ensuring that all components are lowered safely and properly.
[005] It is another objective of the present invention to provide an automatic load body tilting with an alarming system that allows the driver or the vehicle operator to receive a warning about the operation of the hydraulic system for lifting the tipper’s load body.
[006] It is still another objective of the present invention to provide an automatic load body tilting with an alarming system that allows the driver or the vehicle operator the opportunity to repair simple faults themselves without needing costly means to separate and lift the load body out of its position to do the same.
[007] It is yet another objective of the present invention to provide an automatic load body tilting with an alarming system that facilitates easy inspection of parts during vehicle breakdowns and ensures that the load body does not lift while the vehicle is in motion.
Summary of the Invention
[008] An embodiment of the invention achieving the stated objective, that is the automatic load body tilting with an alarming system (100), comprised of, a motor (10), a buzzer (20), a push button (30), a switch (40), a resistor (50), and a power source (60). In the automatic load body tilting with an alarming system (100), the motor (10) is electrically connected with one terminal of the power source (60) by means of electrical cables. The same terminal is also connected with another opposite terminal of the switch (40) as well. The other terminal of the motor (10) is connected to one terminal of the buzzer (20) and the resistor (50). The other terminal of the buzzer (20) is connected with a terminal of the switch (40). The other terminal of the resistor (50) is connected with one terminal of the push button (30). The other terminal of the push button (30) is connected to a second terminal of the switch (40). The third terminal of the switch (40) is connected to the second terminal of the power source (60).
Brief Description of Drawings
[009] The present invention is illustrated in the accompanying drawings that contain references numerals for indicating its various parts. The description of the present invention would therefore be better understood with reference to accompanying diagrams, wherein
[0010] Figure 1 discloses the block diagram of the system as per the preferred embodiment of the present invention as provided on the commercial vehicle.

Detailed Description of the Invention
[0011] Referring to figure 1, the automatic load body tilting with alarming system (100) comprises a motor (10), a buzzer (20), a push button (30), a switch (40), a resistor (50), and a power source (60).
[0012] The motor (10) is electrically connected with one terminal of the power source (60) by means of electrical cables. The same terminal is also connected with another opposite terminal of the switch (40). The motor (10)’s polarity can be reversed with the help of its connection with the switch (40) to allow the motor (10)’s pumping (provided in the hydraulic system for lifting the load body of the light duty electric vehicle) operation to be reversed. The other terminal of the motor (10) is connected to one terminal of the buzzer (20) and the resistor (50). The other terminal of the buzzer (20) is connected with a terminal of the switch (40). The other terminal of the resistor (50) is connected with one terminal of the push button (30). The other terminal of the push button (30) is connected to a second terminal of the switch (40). The resistor (50) is a silicon rectifier diode of the classification 1N5408.
[0013] The third terminal of the switch (40) is connected to the second terminal of the power source (60). The motor (10) is connected with a hydraulic pipeline linked to the hydraulic cylinder of the vehicle, and the motor (10) is also connected to a reservoir of the hydraulic fluid through a hydraulic line provided for the same. This complete pumping unit is mounted on the vehicle’s chassis.
[0014] The hydraulic cylinder is fitted between the load body and chassis frame to allow the said hydraulic cylinder to obtain a mechanical advantage while lifting the load body. The load body provided on the commercial vehicle is fitted at one end to a bracket allowing it to be tiled along the axis formed by the connection between the load body and the chassis inclined towards the rear end of the body. The hand pump so provided can also be operated manually with a lever attachment fixed on its projecting rotating shaft end to cause the hydraulic cylinder to be filled or drained of the hydraulic fluid, thereby allowing manual lifting and lowering of the load body of the light duty electric vehicle.
[0015] The push button (30) is positioned on both sides of the load body end to allow said load body to push and retract the push button (30) when the hydraulic cylinder lowers and raises, respectively, the load body along the axis formed by the bracket linking said load body to the chassis of the commercial vehicle. A relay is fitted at the vehicle fuse box and connected to the switch (40). The relay fitted at the vehicle fuse box and connected to the switch is a 4-pin relay normally open (NO) and normally closed (NC) classification.
[0016] When the driver or the vehicle operator determine that there is a need for performing maintenance below the load body, the parking brakes are first engaged on the vehicle, and after the parking brakes have been engaged, the lifting knob of the hydraulic system (provided in a typical hydraulic system to allow the hydraulic fluid to fill in/empty from the hydraulic cylinders) has been turned up, and the switch (10) has been switched on. The motor (10) starts pumping oil through the hydraulic lines linked from hydraulic fluid reservoir to itself and then further to the hydraulic cylinders provided for lifting the load body. This causes the push button (30) (functioning as a push load sensor in the invention) positioned at both side of load body ends to get actuated thereby providing the buzzer (20) with the power supply from the power source (60) required to operate it. This causes the driver or the vehicle operator to receive a sound signal about the operation of the hydraulic pumping of oil in hydraulic cylinder and causing the load body of the light duty electric vehicle (LD EV) to be lifted from its seat.
[0017] When the driver or the vehicle operator senses that the load body has reached its desired position, the switch (40) is once again operated to cause the motor (10) pumping to stop and the load body to be retained in the required position. In case if electrically operated tipping system fails i.e. when motor (10) fails to pump oil because of a fault, oil pumping in hydraulic cylinder can be carried out by manually. This pumping takes place when a shaft provided at the pump end is manually oscillated by mean of fixing a rod or wheel tommy in that hollow shaft. Here as the body starts to tilt, buzzer (20) starts to make sound for alerting the driver or vehicle operator same as the case in electrical system.
[0018] The driver or the vehicle operator can, in this condition, examine the hydraulic system for faults wherever the vehicle has experienced fault to rectify the determined issue. When the operation has completed the repairs, the position of the switch (40) is reversed, thereby allowing the polarity of the motor (10) to be reversed, and it is run in the opposite direction. This drains the hydraulic fluid from the hydraulic cylinder in a controlled manner into the hydraulic fluid reservoir. When the load body has arrived at its seated position. The push button (30) once again gets pushed, and the buzzer (20) stops sounding.
[0019] In manual tilting operation, after having completed the required maintenance on the bellow body side, the driver or operator can lower the raised body just by turning lifting knob of the hydraulic system (provided in a typical hydraulic system to allow the hydraulic fluid to fill in/empty from the hydraulic cylinders) at down position, this process allows the collected oil to transfer from hydraulic cylinder to reservoir via the hydraulic line and bring the load body back to its position on chassis frame.
[0020] Technical advantages offered by the invention i.e., the automatic load body tilting with an alarming system (100) are-
- It allows the load body of the light duty electric vehicle to be lifted even if the electric hydraulic system has, for some reason, become non-operational.
- It allows the driver or the vehicle operator to receive a warning about the operation of the hydraulic system for lifting the light duty electric vehicle’s load body.
- It allows the driver or the vehicle operator the opportunity to repair simple faults themselves without needing costly means to separate and lift the load body out of its position to do the same.
- It has a simple construction and is therefore easy to maintain and provide in commercial vehicles as a parallel system for operating the hydraulic system for pumping fluid to the hydraulic cylinder(s) for tipping the load body.
[0021] The disclosed invention, i.e. the automatic load body tilting with an alarming system (100), achieves all the set-out objectives.
[0022] It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the present invention has been herein described in terms of its preferred embodiment, those skilled in the art will recognize that the preferred embodiment herein disclosed, can be practiced with modifications within the scope of the invention herein described.
, Claims:We Claim,
1. An automatic load body tilting with alarming system (100) comprising,
• a motor (10),
• a buzzer (20),
• a push button (30),
• a switch (40),
• a resistor (50),
• a power source (60),
wherein,
- the motor (10) is electrically connected with one terminal of the power source (60) by means of electrical cables, the same terminal is also connected with an opposite terminal of the switch (40);
- the other terminal of the motor (10) is connected with one terminal of the buzzer (20) and the resistor (50);
- the other terminal of the buzzer (20) is connected with a terminal of the switch (40), the other terminal of the resistor (50) is connected with one terminal of the push button (30), the other terminal of the push button (30) is connected with a second terminal of the switch (40); and
- the third terminal of the switch (40) is connected with the second terminal of the power source (60).
2. The automatic load body tilting with alarming system (100) as claimed in claim 1, wherein, the motor (10) pumps the oil, feeding the hydraulic pipeline linked to the hydraulic cylinder of the light duty electric vehicle and the motor (10) is also connected to a reservoir of the hydraulic fluid through a hydraulic line provided for the same.
3. The automatic load body tilting with alarming system (100) as claimed in claim 2, wherein,
- the motor (10) and so provided on the light duty electric vehicle is mounted on the chassis;
- hydraulic cylinder is fitted between the load body and chassis frame to allow said hydraulic cylinder to obtain a mechanical advantage while lifting the load body;
- a lever arm can be optionally fitted to the hollow projecting rod of the hydraulic pump to rotate it and manually to lift or lower the load body of the light duty electric vehicle; and
- the load body provided on the commercial vehicle is fitted at one end to a bracket allowing it to be tilted along the axis formed by the connection between the load body and the chassis inclined towards the rear end of the body.
4. The automatic load body tilting with alarming system (100) as claimed in claim 3, wherein, the push button (30) is positioned on both sides of the load body end to allow said load body to push and retract the push button (30) when said the hydraulic cylinder lowers and raises, respectively, the load body along the axis formed by the bracket linking said load body to the chassis of the commercial vehicle.
5. The automatic load body tilting with alarming system (100) as claimed in claim 4, wherein, a relay is fitted at the vehicle fuse box and connected to the switch (40).
6. The automatic load body tilting with alarming system (100) as claimed in claim 5, wherein,
- the resistor (50) is a silicon rectifier diode of the classification 1N5408; and
- the relay fitted at the vehicle fuse box and connected to the switch is a 4 pin relay normally open (NO) and normally closed (NC) classification.
Dated 11th day of February 2025

VIDIT CHOUBEY
(IN P/A 5566)
AGENT FOR THE APPLICANT(S)

To,
The Controller of Patents,
The Patent Office, at Mumbai